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DMLS AlSi10Mg Aluminum vs. Magnesium AZ31B-H24

Compare DMLS AlSi10Mg Aluminum vs. Magnesium AZ31B-H24 strength, stiffness, weight and thermal properties.

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DMLS AlSi10Mg Aluminum3D printed metal (DMLS)
Magnesium AZ31B-H24Wrought
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Mechanical
Yield strength270MPasourcetypical, as manufactured, horizontal220MPasourcetypical, H24, 0.5-6 mm, 0.2 % proof stress
Ultimate tensile strength450MPasourcetypical, as manufactured, horizontal290MPasourcetypical, H24, 0.5-6 mm
Elongation at break10.2%sourcetypical at break, as manufactured, horizontal13%sourcetypical, H24, 0.5-6 mm, gauge 5.65√A
Young's modulus (stiffness)72GPasourcesame material and process, different machine maker: Renishaw RenAM 500, 30 µm, as built, horizontal (XY)44.8GPasourcetypical (handbook physical constant)
Density2,670kg/m³sourcetypical part density (ISO 3369), EOS M 290, AlSi10Mg_030_FlexM291 (30 µm)1,769kg/m³sourcenominal
Strength to weight101kN·m/kg124kN·m/kg23% higher
Stiffness to weight27MN·m/kg6% higher25.3MN·m/kg
Poisson's ratio0.33sourcebase material: cast Al-Si-Mg alloy 359.0 (Al-9Si-0.6Mg, closest MIL-HDBK-5J alloy to AlSi10Mg / EN AC-43000)0.35sourcetypical (handbook physical constant)
Shear modulus27.1GPa1.63x stiffer in shear16.6GPa
Bulk modulus70.6GPa49.8GPa
Speed of sound5,193m/s5,032m/s
Thermal
Thermal conductivity110W/m·Ksourcetypical, as manufactured, horizontal (ISO 22007-2)76.9W/m·Ksourcetypical (temper/temperature not stated)
Thermal expansion20µm/m·Ksourcemean 25-100 °C, ASTM E22826.8µm/m·Ksourcetypical (temperature range not stated)
100 mm part over a 50 °C swing100µm growth34% less134µm growth
Specific heat963J/kg·Ksourcebase material: cast Al-Si-Mg alloy 359.0 (MIL-HDBK-5J), at 100 °C1,040J/kg·Ksourcetypical
Heats up and cools (diffusivity)42.8mm²/s2% faster41.8mm²/s
Thermal shock resistance13,819W/m1.51x more resistant9,159W/m
Max service temperaturenot sourced149°Csourcestated application limit
Values forEOS Aluminium AlSi10Mg (powder 9011-0024), EOS M 290 | 30 µm process (AlSi10Mg_FlexM291 2.01), as manufactured, horizontal; machined (turned) specimens, ISO 6892-1 B10AZ31B-H24 sheet 0.016-0.062 in., MIL-HDBK-5J Table 4.2.1.0(b) (AMS 4377); strengths are S-basis MINIMUMS

Every value links to the document that states it. "Not sourced" means no citable source states it (or only a specification minimum); figures computed from it are left out too.

DMLS AlSi10Mg Aluminum is 3D printed: its properties depend on build direction and print settings; these are typical values.

Questions

Is DMLS AlSi10Mg Aluminum stronger than Magnesium AZ31B-H24?

DMLS AlSi10Mg Aluminum is stronger: its yield strength is 270 MPa against 220 MPa for Magnesium AZ31B-H24 (23%).

Which is lighter, DMLS AlSi10Mg Aluminum or Magnesium AZ31B-H24?

Magnesium AZ31B-H24 is lighter: 1,769 kg/m³ against 2,670 kg/m³ for DMLS AlSi10Mg Aluminum.

Which is stiffer, DMLS AlSi10Mg Aluminum or Magnesium AZ31B-H24?

DMLS AlSi10Mg Aluminum is stiffer: Young's modulus 72 GPa against 44.8 GPa for Magnesium AZ31B-H24, so the same part in DMLS AlSi10Mg Aluminum deflects less under the same load.

Which is lighter for the same job, DMLS AlSi10Mg Aluminum or Magnesium AZ31B-H24?

For the same stiffness or strength: DMLS AlSi10Mg Aluminum is lighter for a stiff rod or tie (tension); Magnesium AZ31B-H24 is lighter for a stiff beam (bending), stiff panel or plate, strong rod or tie, strong beam, strong panel or plate.

Part that must beDMLS AlSi10Mg AluminumMagnesium AZ31B-H24
Stiff rod or tie (tension)lighter6% heavier
Stiff beam (bending)19% heavierlighter
Stiff panel or plate29% heavierlighter
Strong rod or tie23% heavierlighter
Strong beam32% heavierlighter
Strong panel or plate36% heavierlighter

For the same stiffness or strength, mass scales with density over stiffness (or strength) raised to a power set by how the part is loaded: 1 for a rod in tension, 1/2 for a beam in bending, 1/3 for a panel (the standard material-selection indices).

Which conducts heat better, DMLS AlSi10Mg Aluminum or Magnesium AZ31B-H24?

DMLS AlSi10Mg Aluminum conducts heat better: 110 W/m·K against 76.9 W/m·K for Magnesium AZ31B-H24.

Which expands less with temperature?

DMLS AlSi10Mg Aluminum expands less: 20 µm/m·K against 26.8 µm/m·K for Magnesium AZ31B-H24.

Among 59 materials

1k10k0.1110100Density (kg/m³)Young's modulus (GPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLS PA12 NylonDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelDMLS AlSi10Mg AluminumMagnesium AZ31B-H24
Stiffness against density
1k10k101001kDensity (kg/m³)Yield strength (MPa)Plastic PLAPlastic PETGPlastic ABSPlastic TPUPlastic NylonRubberAluminumSteelIronTitaniumSteel AISI 1018Stainless 304Stainless 316Aluminum 6061-T6Aluminum 7075-T6Brass C360Copper C110GlassSteel AISI 1045Steel AISI 4340Steel A992Stainless 303Stainless 17-4PHAluminum 2024-T351Aluminum 5052-H32Aluminum 7050-T7451Titanium Ti-6Al-4VBrass C260Nickel Inconel 718Zinc Zamak 3Plastic ABS (bulk/injection)Plastic PolycarbonatePlastic POM/AcetalPlastic Nylon PA6Plastic Nylon PA66Plastic PEEKPlastic PTFEPlastic UHMWPEPlastic HDPEPlastic PolypropylenePlastic PMMAFDM ASAFDM PolycarbonateFDM PAHT-CFFDM HIPSSLA Resin Tough 2000SLA Resin Elastic 50ASLS PA12 NylonDMLS Ti-6Al-4V ELI TitaniumDMLS 316L Stainless SteelDMLS 17-4PH Stainless SteelBrickDMLS AlSi10Mg AluminumMagnesium AZ31B-H24
Strength against density

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